<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>

<tiles:insert definition="header"  flush="true" />
<tiles:insert definition="user-body-as-tile"  flush="true" />
<tiles:insert definition="footer"  flush="true" />

Static Include
<%-- <%@include file="body/user-form-body.jsp" %> --%>

Commenting a tile and see how its failing
<%-- <tiles:insert definition="footerinvalid"  flush="true" /> --%>